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    <meta charset="UTF-8">
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    <title>Document</title>
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<body>
    <script>
        let arr = ['apple','banana','pear','apple','orange','orange'];

        //使用set方法去重，简洁清晰快速；可能存在兼容性问题
        const newArr = [...new Set(arr)]
        console.log(newArr);
    </script>
</body>
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